Irradiation creep and swelling of AISI 316 to exposures of 130 dpa at 385 to 400/sup 0/C

Conference · Tue Sep 01 04:00:00 EDT 1987

OSTI ID:5705935

Garner, F A; Porter, D L

The creep and swelling of AISI 316 stainless steel have been studied at 385 to 400/sup 0/C in EBR-II to doses of 130 dpa. Most creep capsules were operated at constant stress and temperature but mid-life changes in these variable were also made. This paper concentrates on the behavior of the 20% cold-worked condition but five other conditions were also studied. Swelling at less than or equal to00/sup 0/C was found to lose the sensitivity to stress exhibited at higher temperatures while the creep rate was found to retain linear dependencies on both stress and swelling rate. The creep coefficients extracted at 400/sup 0/C agree with those found in other experiments conducted at higher temperatures. In the temperature range of less than or equal to400/sup 0/C, swelling is in the recombination-dominated regime and the swelling rate falls strongly away from the approx.1%/dpa rate observed at higher temperatures. These lower rates of creep and swelling, coupled with the attainment of high damage levels without failure, encourage the use of AISI 316 in the construction of water-cooled fusion first walls operating at temperatures below 400/sup 0/C. 23 refs., 8 figs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA); Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38; AC06-76RL01830
• OSTI ID: 5705935
• Report Number(s): CONF-871036-13; ON: DE88002964
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106 -- Metals & Alloys-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CREEP
DEFORMATION
FIRST WALL
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
IRRADIATION CAPSULES
MATERIALS
MECHANICAL PROPERTIES
MEDIUM TEMPERATURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
RADIATION EFFECTS
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
STRESS ANALYSIS
SWELLING
THERMONUCLEAR REACTOR MATERIALS
THERMONUCLEAR REACTOR WALLS